In nectar-feeding birds, ISWs come as modifications of the bill tips to stab and pluck feathers (e.g. (researchgate.net)
It is now possible to trace the appearance of embryonic development with the help of tomography and reconstruct the evolution of bird feathers. (bioexplorer.net)
Morphology and distribution of epidermal structures (excluding feathers) in non-avian theropod dinosaurs. (paleontologista.com)
They are found in the nails, scales , and claws of reptiles , in some reptile shells ( testudines , such as tortoise , turtle , terrapin ), and in the feathers , beaks , and claws of birds . (wikipedia.org)
Vertebrates2
So it's kind of surprising that only three groups of vertebrates have ever evolved flight: pterosaurs, birds and bats. (snexplores.org)
That was well before the evolution of the other two groups of flying vertebrates - birds and bats. (snexplores.org)
Epidermal1
Keratin monomers assemble into bundles to form intermediate filaments , which are tough and form strong unmineralized epidermal appendages found in reptiles , birds , amphibians , and mammals . (wikipedia.org)
An unusually large bird wing in mid-cretaceous burmese amber. (paleontologista.com)
Dinosaurs2
Birds are, in fact, dinosaurs (part of the clade Dinosauria). (uncommondescent.com)
Pterosaurs died out in the same mass extinction that killed off non-bird dinosaurs. (snexplores.org)
Findings1
On the shallow surface, it is nought but a superficial recording of anatomical survey findings among a population numbering fiftythousandthreehundredsix, all golden ancestors peopling a long-lost colony dome. (chaos-dwarfs.com)
Morphology1
Increasing our knowledge of morphology, mechanics, and diversity of hummingbird feeding structures will have implications for understanding the ecology and evolution of these remarkable animals. (researchgate.net)
Seabirds3
Worldwide, there are more than 350 species of birds that live either partially or exclusively at sea, and these are generally known as "seabirds. (hww.ca)
Although seabirds are highly visible from coasts and at sea, most people do not think of birds as sea creatures in the same way that they think of whales or seals. (hww.ca)
True seabirds - those that spend all their lives at sea except when breeding - are among the most far-ranging of all birds. (hww.ca)
Reptiles1
The harder beta-keratins (β-keratins) are found only in the sauropsids , that is all living reptiles and birds . (wikipedia.org)
Implications1
a preliminary analysis and implications for flight style inferences in Mesozoic birds. (paleontologista.com)
It has been suggested that the enigmatic African fossil bird Eremopezus was a relative too, but the evidence for that is unconfirmed. (wikipedia.org)
Analysis1
Microscopic analysis of eggshell structure by Konstantin Mikhailov in 1995 found that the eggshells of shoebills closely resembled those of other Pelecaniformes in having a covering of thick microglobular material over the crystalline shells. (wikipedia.org)
Genetic2
The table below lists the 14 families of marine birds and the approximate number of species in each (the exact number of species is continually being revised as genetic research reveals that some very similar-looking birds are so different in their genetic makeup that they constitute different species). (hww.ca)
You can't, for instance, breed a fruit fly the size of a humming bird, because that would be far beyond the genetic limits within the genetic code of fruit flies. (catholicamericanthinker.com)
Long4
The shoebill (Balaeniceps rex) also known as the whalebill, whale-headed stork, and shoe-billed stork is a large long-legged wading bird. (wikipedia.org)
The neck is relatively shorter and thicker than other long-legged wading birds such as herons and cranes. (wikipedia.org)
Everyone who has visited the coast is familiar with gulls, those graceful, long-winged birds that throng the beaches and harbours and boldly beg for scraps. (hww.ca)
I even peered closely on the thin edges, which bore microscopic markings which resembled long jumbles of numbers, akin the code-names of file-spirits. (chaos-dwarfs.com)
Found1
Commonly called doctorfish or doctorfish tang, reaching a maximum size of 39 centimetres (15 in) and 5.1 kilograms (11 lb), Acanthurus chirurgus gets its common name for the structures called "scalpels", which are found on either side of the caudal peduncle. (curacao-fishing-adventures.com)
Mouth2
These cephalopods have eight limbs, a mouth in the middle, two eyes, and a beak. (howtodiscuss.com)
Its mouth parts appear beak-like, forming a distinct piercing mouth cone. (peerj.com)
Evolution1
A new, remarkably preserved, enantiornithine bird from the Late Cretaceous of Henan (central China) and convergent evolution between enantiornithines and modern birds. (paleontologista.com)
Size1
a) Variation in size: this variation can be observed at microscopic bacteria to the blue whale and red wood trees of California. (thestudypath.com)
Large1
All that is known of Eremopezus is that it was a very large, probably flightless bird with a flexible foot, allowing it to handle either vegetation or prey. (wikipedia.org)
Groups1
Different groups of crustaceans tend to differ in the number of structures included into the feeding process. (peerj.com)
Appendages3
Because animals can change orientation with respect to their environment, and because appendages like limbs and tentacles can change position with respect to the main body, terms to describe position need to refer to an animal when it is in its standard anatomical position . (wikipedia.org)
[1] This means descriptions as if the organism is in its standard anatomical position, even when the organism in question has appendages in another position. (wikipedia.org)
Keratin monomers assemble into bundles to form intermediate filaments , which are tough and form strong unmineralized epidermal appendages found in reptiles , birds , amphibians , and mammals . (cloudfront.net)
Respiratory2
The goal of these reviews was to identify the morphological structures and histological features of the bird's respiratory system. (actascientific.com)
Anatomical, histological studies of the respiratory system of the common J. quail ( coturnix L )". M.S. Thesis Basrah Uni. (actascientific.com)
Scales2
Birds still have many resemblances to reptiles, such as their habit of laying eggs, the possession of scales on their beaks and legs, and the arrangement of many internal structures. (forextipsnow.com)
They are found in the nails, scales , and claws of reptiles , in some reptile shells ( testudines , such as tortoise , turtle , terrapin ), and in the feathers , beaks , and claws of birds . (cloudfront.net)
Humans4
For the structure of bone, tendon and muscle within the human hand is one of the key anatomical features by which humans are defined. (hachettebookgroup.com)
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals , including humans . (wikipedia.org)
Because of differences in the way humans and other animals are structured, different terms are used according to the neuraxis and whether an animal is a vertebrate or invertebrate . (wikipedia.org)
[1] The reasoning is that the neuraxis is different between the two groups, and so is what is considered the standard anatomical position , such as how humans tend to be standing upright and with their arms reaching forward. (wikipedia.org)
The harder beta-keratins (β-keratins) are found only in the sauropsids , that is all living reptiles and birds . (cloudfront.net)
Morphology2
Morphology - or structure - is the interface between genetics and ecology. (otago.ac.nz)
The Oscines constitute about four fifths of the Passerine birds and are extremely uniform in their morphology. (ladygouldian.com)
Species6
Passerines are the most recent and advanced order of bird species. (ladygouldian.com)
They account for approximately three fifths of all living birds, or some 5,739 of the 9,702 species of 1,168 genera. (ladygouldian.com)
These ancient species present a unique snapshot of what these wasps looked like in their earliest forms, this allows researchers to better understand the order of evolutionary events through time and when certain structures evolved that ultimately led to the massive diversity we see today. (pensoft.net)
While no living species have such a pronounced structure, it is hypothesized to have assisted with egg-laying and ovipositing or perhaps sifting through loose leaf litter for hosts. (pensoft.net)
We tested whether propagule abundance, species richness and composition varied among bird species, and between the cold and warm seasons. (bvsalud.org)
Our statistical models suggest that richness and abundance of propagules are associated with bird species and not affected by seasonality. (bvsalud.org)
Physiology2
Various types of organisms in the world differ in shape, structure and physiology. (rbsesolutions.com)
This feature found in Passerines reflects a significant move away from the physiology established in more primitive bird forms such as Galliformes (poultry). (ladygouldian.com)
Protein1
micro-gravity means that fairly complex protein structures can be created more quickly, which helps with the testing of drugs and speeds up the process of research into various diseases. (blogspot.com)
Studies1
3] Confocal microscopic studies demonstrate an inverse correlation between nerve density and blood vessel diameter and evidence that capillary malformations with the lowest nerve density exhibit the highest blood vessel density and the poorest response to laser intervention. (medscape.com)
Specific1
Anatomical terms can be combined to be more specific. (wikipedia.org)
Order2
Finches belong to the most advanced order of birds: Oscine passerines. (ladygouldian.com)
[email protected] www.doktorverlag.de Aus der Klinik für Vögel, Reptilien, Amphibien und Fische Betreuer: Prof. Dr. E. F. Kaleta The glycogen body in neonate birds of the order Psittaciformes and its role in neonate mortality INAUGURAL-DISSERTATION zur Erlangung des Grades eines Dr. med. (studylibde.com)
Body1
As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axes . (wikipedia.org)
Group2
Passerines broke away from the normal avian (more primitive bird orders) mould to become the most successful group of birds. (ladygouldian.com)
The elevated basal metabolic rates of Passerines compared to other birds are an indication of the uniqueness of this group of birds. (ladygouldian.com)
Older2
Other birds such as poultry (Galliformes) belong to much older and more primitive orders of birds. (ladygouldian.com)
In older birds, infection is caused primarily by inhalation of spore-laden dust from contaminated litter or feed or dusty range areas. (beautyofbirds.com)
Require1
Most birds require only small and thin scapulas to support the wings but penguins require larger scaffolding for their swimming muscles. (si.edu)
Position3
Knowledge of the special position Passerines hold in the bird world should help you understand the notion of a sterile bowel in these birds. (ladygouldian.com)
The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position . (wikipedia.org)
These allow parties that use anatomical terms, such as anatomists , veterinarians , and medical doctors , to have a standard set of terms to communicate clearly the position of a structure. (wikipedia.org)
Helps1
Called countershading, the black and white coloration helps camouflage the birds from potential predators. (si.edu)